December weather forecastPerth, Canada
December
Weather in December
The first month of the winter, December, is still a freezing cold month in Perth, Canada, with temperature in the range of an average high of -0.8°C (30.6°F) and an average low of -6.1°C (21°F).Temperature
December's onset brings a reduction in the average high-temperature, from a frosty 6°C (42.8°F) in November to a subzero cold -0.8°C (30.6°F). In December, Perth encounters an average low-temperature of -6.1°C (21°F) during the night.Humidity
The average relative humidity in December in Perth is 86%.Rainfall
In Perth, in December, it is raining for 9 days, with typically 56mm (2.2") of accumulated precipitation. Throughout the year, in Perth, there are 141.7 rainfall days, and 669mm (26.34") of precipitation is accumulated.Snowfall
Months with snowfall in Perth are January through May, October through December. In December, in Perth, Canada, it is snowing for 11.4 days. Throughout December, 126mm (4.96") of snow is accumulated. Throughout the year, there are 56.1 snowfall days, and 622mm (24.49") of snow is accumulated.Daylight
The month with the shortest days in Perth is December, with an average of 8h and 54min of daylight.On the first day of the month, sunrise is at 7:23 am and sunset at 4:25 pm. On the last day of December, in Perth, sunrise is at 7:42 am and sunset at 4:33 pm EST.
Sunshine
In Perth, the average sunshine in December is 3h.UV index
The months with the lowest UV index in Perth are January and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the ordinary person.Note: In December, the maximum UV index of 1 suggests this advice:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Perth, Canada
- Average high temperature in December: -0.8°C
The warmest month (with the highest average high temperature) is July (25.1°C).
The month with the lowest average high temperature is January (-4.4°C).
- Average low temperature in December: -6.1°C
The month with the highest average low temperature is July (15.3°C).
The coldest month (with the lowest average low temperature) is January (-11.8°C).
Average pressure in December
Perth, Canada
- Average pressure in December: 1017.4mbar
The month with the highest atmospheric pressure is November (1018.2mbar).
The month with the lowest atmospheric pressure is June (1012.7mbar).
Average wind speed in December
Perth, Canada
- Average wind speed in December: 13.8km/h
The windiest month (with the highest average wind speed) is February (14.9km/h).
The calmest months (with the lowest average wind speed) are July and August (10.6km/h).
Average humidity in December
Perth, Canada
- Average humidity in December: 86%
The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is April (77%).
Average rainfall in December
Perth, Canada
- Average rainfall in December: 56mm
The wettest month (with the highest rainfall) is August (70mm).
The driest months (with the least rainfall) are March and November (43mm).
Average rainfall days in December
Perth, Canada
- Average rainfall days in December: 9 days
The month with the highest number of rainy days is July (17.1 days).
The month with the least rainy days is January (5 days).
Average snowfall in December
Perth, Canada
- Average snowfall in December: 126mm
The month with the highest snowfall is February (157mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Perth, Canada
- Average snowfall days in December: 11.4 days
The months with the highest number of snowfall days are January and February (13.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Perth, Canada
- Average daylight in December: 8h and 54min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in December: 3h and 0min
The months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 2h and 42min).
Average sunshine days in December
Perth, Canada
- Average sunshine days in December: 14.4 days
The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is July (11.1 days).
Average UV index in December
Perth, Canada
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Perth, Canada
- Average cloud cover in December: 68
The month with the most cloud cover is February (Cloud cover 71).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in December
Perth, Canada
- Average visibility in December: 8km
The months with the highest visibility are April, May, June, July, August, September, October and November (9km).
The months with the lowest visibility are January, February, March and December (8km).
